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A device and method for generating and dynamically controlling vector beams

A technology for regulating devices and beams, applied in the field of information optics, can solve problems such as low beam stability, difficult dynamic control, complex device structure, etc., and achieve the effects of simple and reliable optical path structure, improved stability and flexibility, and expanded degrees of freedom

Active Publication Date: 2022-05-03
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provides a vector beam generation and dynamic control device, aiming to solve the existing device structure that can produce high-order Poincaré spherical beams and hybrid polarization vector beams Complexity, low beam stability and difficult dynamic adjustment

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  • A device and method for generating and dynamically controlling vector beams
  • A device and method for generating and dynamically controlling vector beams
  • A device and method for generating and dynamically controlling vector beams

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Embodiment Construction

[0046] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0047] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0048] It should also be noted that the orientation terms such as left, right, up and down in the embodiments of the present invention are only relative concepts or refer to the normal use state of the product, and should not be regarded as re...

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Abstract

The invention provides a device and method for generating and dynamically regulating vector beams. The device includes the following components sequentially designed along the optical path: a laser light source is used to generate linearly polarized Gaussian beams; a power adjustment module is used to adjust beam energy and linearly polarize The Gaussian beam is converted into a linearly polarized Gaussian beam with a fixed polarization direction; the beam expansion and collimation module is used to expand and collimate the linearly polarized Gaussian beam with a fixed polarization direction; the beam modulation module includes a liquid crystal phase retarder and a non-uniform polarization converter , the liquid crystal phase retarder is used to modulate the incident ray polarized Gaussian beam into a general elliptically polarized Gaussian beam, and the non-uniform polarization converter is used to modulate the general elliptically polarized Gaussian beam into a high-order Poincaré spherical beam or a hybrid polarization vector beam. The technical scheme of the invention has a simple structure, can improve the stability of the light beam, and can realize the dynamic control function of the high-order Poincaré spherical beam and the hybrid polarization vector beam.

Description

technical field [0001] The invention belongs to the technical field of information optics, and in particular relates to a device and method for generating and dynamically regulating vector light beams. Background technique [0002] As we all know, phase and polarization are two important properties of light. Among them, the spatial distribution of phase leads to the orbital angular momentum of light, the polarization properties determine the spin angular momentum, and the superposition of orbital angular momentum and spin angular momentum produces Vector vortex beam. Nowadays, due to the unique phase structure and polarization distribution of the vector vortex beam, it is used in more and more technical fields, such as but not limited to quantum computing, information encryption, particle manipulation, high-resolution microscopic imaging, laser micro-nano processing etc., have received extensive attention, and gradually began to play its unique advantages. In the field of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/09G02B27/28
CPCG02B27/0927G02B27/0938G02B27/286
Inventor 徐少林郑健黄佳旭胡劲
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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